CN109236338B - Slip casting type self-expansion anchor rod structure - Google Patents
Slip casting type self-expansion anchor rod structure Download PDFInfo
- Publication number
- CN109236338B CN109236338B CN201811336301.6A CN201811336301A CN109236338B CN 109236338 B CN109236338 B CN 109236338B CN 201811336301 A CN201811336301 A CN 201811336301A CN 109236338 B CN109236338 B CN 109236338B
- Authority
- CN
- China
- Prior art keywords
- grouting
- section
- hole
- anchoring
- type self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007569 slipcasting Methods 0.000 title claims description 26
- 238000004873 anchoring Methods 0.000 claims abstract description 31
- 239000011440 grout Substances 0.000 claims abstract description 20
- 239000011435 rock Substances 0.000 claims abstract description 19
- 230000000903 blocking effect Effects 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 5
- 239000007787 solid Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/004—Bolts held in the borehole by friction all along their length, without additional fixing means
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/021—Grouting with inorganic components, e.g. cement
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides a grouting type self-expansion anchor rod structure, which belongs to the technical field of rock mass reinforcement and comprises a hollow grouting rod body and a lateral expansion device, wherein one end of a grouting section of the hollow grouting rod body is coaxially connected with an anchoring section, the other end of the grouting section is provided with a grout stopping cap, and the grouting section is provided with a flow guide hole and a plurality of grouting holes communicated with the flow guide hole; the lateral expansion device comprises a slurry blocking tray, a sliding barrel, a plurality of lateral expansion units and a plurality of inhaul cables, the slurry blocking tray and the sliding barrel are arranged at two ends of the grouting section in a sliding mode respectively, two ends of the lateral expansion units are connected with the slurry blocking tray and the sliding barrel respectively, one ends of the inhaul cables are connected with the sliding barrel, the other ends of the inhaul cables penetrate through holes, and the lateral expansion units are axially contracted and expanded outwards along the grouting section by means of external force applied to the inhaul cables. The grouting type self-expansion anchor rod structure provided by the invention can improve the compactness of a rock body and ensure that the anchor rod structure is tightly attached to a hole wall rock body, thereby improving the anchoring performance of the anchor rod.
Description
Technical Field
The invention belongs to the technical field of rock mass reinforcement, and particularly relates to a grouting type self-expansion anchor rod structure.
Background
In tunnel and slope engineering, anchor rods have been widely used for reinforcement of fractured rock masses. In the current anchor rod anchoring technology, the anchor rod is usually a solid thread steel bar, and after slurry is solidified through grouting in a gap between the solid anchor rod and a drilled hole, the fractured rock body is reinforced by using the friction force between the surface thread of the rod body and the grouting body. In engineering practice, this anchoring method has two disadvantages: (1) the anchor rod is wrapped by the grouting body, the contact surface between the anchor rod and the grouting body is limited, the anchor rod is not fully solidified to form a whole, and the anchor rod is easy to pull out from the grouting body; (2) due to the influence of drilling unloading, the hole wall rock mass is easy to form a loose ring, and the grouting body cannot be tightly attached to the hole wall rock mass and cannot form an effective anchoring effect.
Disclosure of Invention
The invention aims to provide a grouting type self-expansion anchor rod structure to solve the technical problem of poor anchoring property of an anchor rod in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: there is provided a slip casting type self-expanding anchor structure comprising:
the hollow grouting rod body comprises a grouting section, one end of the grouting section is coaxially connected with the anchoring section, the other end of the grouting section is provided with a grout stopping cap, the axial center of the grouting section is provided with a flow guide hole, and the grouting section is radially provided with a plurality of grouting holes communicated with the flow guide hole;
lateral expansion device, including stifled thick liquid tray, slide cartridge, a plurality of lateral expansion unit and many cables, stifled thick liquid tray assembly is in the slip casting section outside is close to the one end of only starching the cap, slide cartridge slip suit is in the slip casting section outside is close to the one end of anchor section, and is a plurality of lateral expansion unit centers on the outside equipartition and the both ends of slip casting section are connected respectively stifled thick liquid tray with slide cartridge, many the cable is located slip casting section with between the lateral expansion unit, and its one end is connected slide cartridge, the other end passes the perforating hole that corresponds the setting on the stifled thick liquid tray, give with the help of applying the external force of cable, lateral expansion unit follows slip casting section axial contraction and outside inflation.
Furthermore, the plurality of groups of grouting holes are arranged along the axial direction of the grouting section, and the grouting holes in each group are uniformly arranged along the same radial section of the grouting section.
Further, the multiple groups of grouting holes are arranged at equal intervals along the axial direction of the grouting section.
Further, the lateral telescopic expansion unit comprises a plurality of steel arches and a rotating hinge for connecting two adjacent steel arches.
Further, the steel arch is of an arch structure which is arched towards the grouting section.
Furthermore, the arch structure is trapezoidal, and the rotary hinge is connected to the corresponding free ends of two adjacent trapezoids.
Further, the trapezoid is an isosceles trapezoid.
Furthermore, an annular groove is formed in the outer end face of the grouting and plugging tray, a porous anchorage device for the stay cable to penetrate through is assembled in the annular groove, and through holes in the porous anchorage device are in one-to-one correspondence with the through holes and are coaxial.
Furthermore, an anchoring part for fixing the inhaul cable is arranged at the through hole.
Further, the anchoring section is provided with an external thread.
The grouting type self-expansion anchor rod structure provided by the invention has the beneficial effects that: compared with the prior art, the slip casting type self-expansion anchor rod structure has the advantages that by means of external force applied to the stay cable, the sliding barrel moves towards the direction of the grout stop cap under the traction of the stay cable, the lateral expansion unit is enabled to expand radially to extrude rock mass on the hole wall, then the rod body and the grout body are fully connected into a whole in a slip casting mode inside the rod body, the anchor rod can be effectively prevented from being pulled out of the grout body, meanwhile, the lateral expansion device can apply extrusion acting force to the rock mass on the hole wall, the compactness of the rock mass can be improved, the anchor rod structure can be enabled to be tightly attached to the rock mass on the hole wall, and accordingly the anchoring performance of the.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a grouting type self-expansion anchor rod structure provided by an embodiment of the invention;
fig. 2 is a schematic cross-sectional view of a hollow grouting rod body of a grouting type self-expansion anchor rod structure according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a lateral expansion device of a grouting type self-expansion anchor structure according to an embodiment of the invention.
Wherein, in the figures, the respective reference numerals:
1-hollow grouting rod body; 2-a lateral expansion device; 3-a pulp blocking tray; 4-a porous anchor; 5-a grout stopping cap; 6-an anchoring section; 7-grouting holes; 8-diversion holes; 9-a slide cylinder; 10-a guy cable; 11-rotating hinge; 12-steel arch centering; 13-a through hole; and 14-grouting section.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 3 together, a slip casting type self-expanding anchor structure according to the present invention will now be described. The grouting type self-expansion anchor rod structure comprises a hollow grouting rod body 1 and a lateral expansion device 2, wherein the hollow grouting rod body 1 comprises a grouting section 14, one end of the grouting section 14 is coaxially connected with an anchoring section 6, the other end of the grouting section is provided with a grout stopping cap 5, the axial center of the grouting section 14 is provided with a flow guide hole 8, and the grouting section is radially provided with a plurality of grouting holes 7 communicated with the flow guide hole 8; lateral expansion device 2 is including stifled thick liquid tray 3, slide cartridge 9, the flexible expansion unit of a plurality of lateral directions and many cables 10, stifled thick liquid tray 3 assembles the one end that is close to only thick liquid cap 5 in slip casting section 14 outside, slide cartridge 9 slip suit is in the one end that is close to anchor section 6 in slip casting section 14 outside, the flexible expansion unit of a plurality of lateral directions connects stifled thick liquid tray 3 and slide cartridge 9 respectively around the outside equipartition and both ends of slip casting section 14, many cables 10 are located between slip casting section 14 and the flexible expansion unit of lateral direction, and its one end is connected slide cartridge 9, the other end passes the perforating hole 13 that corresponds the setting on stifled thick liquid tray 3, with the help of applying the external force for cable 10, the flexible expansion unit of lateral direction contracts and outwards expands along slip casting section 14 axial.
Compared with the prior art, the grouting type self-expansion anchor rod structure provided by the invention has the advantages that tension of the stay cable 10 is applied by means of the tensioning equipment, the sliding barrel 9 moves towards the direction of the grout stop cap 5 under the traction of the stay cable 10, so that the lateral expansion unit expands radially to extrude a hole wall rock mass, and then the rod body and grouting body are fully connected into a whole in a grouting mode inside the rod body. The anchor rod structure provided by the invention can integrate the anchor rod and the grouting body through grouting inside the rod body, can extrude the rock mass in a radial expansion mode, improves the compactness of the rock mass and the pulling resistance of the anchor rod, and provides an effective means for reinforcing the fractured rock mass of a tunnel and a side slope.
Wherein, the slurry blocking tray 3 is connected with the hollow grouting rod body 1 by screw threads, and the slurry blocking tray 3 is used for blocking the drilled hole; anchor section 6 and slip casting section 14 integrated into one piece, or threaded connection, anchor section 6 is used for being connected with the anchor of drilling bottom, ends thick liquid cap 5 and is used for shutoff water conservancy diversion hole 8, and the thick liquid pours into from water conservancy diversion hole 8, sprays the outside from slip casting hole 7, fills the gap between the body of rod and the drilling, through setting up a plurality of slip casting holes 7 for the speed of whitewashing.
Referring to fig. 1 to 2, as an embodiment of the grouting type self-expanding anchor structure provided by the present invention, a plurality of groups of grouting holes 7 are formed along an axial direction of the grouting section 14, and the grouting holes 7 in each group are uniformly formed along the same radial section of the grouting section 14. Through evenly setting up the injected hole 7 at the cavity slip casting body of rod 1 for the thick liquid evenly sprays in drilling, improves the effect of anchor. In this embodiment, three grouting holes 7 are uniformly formed in the same radial cross section, and two or four grouting holes may be formed. The grouting holes 7 may also be uniformly distributed along the row of the outer circumferential surface of the hollow grouting rod body 1, and are not limited to the embodiment shown in the present disclosure.
Referring to fig. 1, as a specific embodiment of the grouting type self-expanding anchor rod structure provided by the present invention, a plurality of groups of grouting holes 7 are arranged at equal intervals along the axial direction of the grouting section 14 to improve the anchoring effect.
Referring to fig. 1 and 3, as an embodiment of the slip casting type self-expansion anchor structure provided by the present invention, the lateral expansion unit includes a plurality of steel arches 12 and a rotation hinge 11 connecting two adjacent steel arches 12. The adjacent steel arches 12 are rotatably connected by means of the rotating hinges 11, and when the inhaul cable 10 is tensioned, the adjacent steel arches 12 are mutually closed, so that the lateral telescopic expansion units expand outwards to extrude the drilled holes and extend into the walls of the drilled holes, and the anchoring effect is improved.
Referring to fig. 1 and 3, as an embodiment of the grouting type self-expanding anchor structure provided by the present invention, a steel arch 12 is an arch structure that is arched toward a grouting section 14. The rotating hinge 11 is close to the outer side, along with the outward stretching of the inhaul cable 10, the rotating hinge 11 is extruded outwards, the included angle formed by the two edges connected with the rotating hinge 11 is gradually reduced, and the rotating hinge 11 can be conveniently inserted into the inner wall of a drilled hole. Wherein the steel arch frame 12 can be made of stainless steel pipes or round steel by bending.
Referring to fig. 1, as a specific embodiment of the grouting type self-expanding anchor rod structure provided by the present invention, the arch structure is trapezoidal, and the rotating hinge 11 is connected to the free end corresponding to two adjacent trapezoids.
Referring to fig. 1, as a specific embodiment of the slip casting type self-expanding anchor rod structure provided by the present invention, the trapezoid is an isosceles trapezoid.
Referring to fig. 1, as a specific embodiment of the grouting type self-expanding anchor rod structure provided by the present invention, an annular groove is provided on an outer end surface of the grout blocking tray 3, a porous anchor 4 for a guy cable 10 to pass through is assembled in the annular groove, and through holes of the porous anchor 4 are in one-to-one correspondence and coaxial with the through holes 13. The inhaul cable 10 penetrates through the through hole 13 and the through hole, abrasion of the inhaul cable 10 to the slurry blocking tray 3 is reduced by means of the porous anchorage device 4, the porous anchorage device 4 is convenient to replace, waste is reduced, the porous anchorage device 4 and the slurry blocking tray 3 are connected through threads, and the porous anchorage device 4 and the rod body are in sealing fit or can be connected through threads.
Referring to fig. 1, as an embodiment of the slip casting type self-expanding anchor structure according to the present invention, an anchor for fixing a cable 10 is provided at a through hole. The anchoring piece is also convenient for plugging the through hole after grouting, and prevents grout from leaking out of the through hole.
As a specific embodiment of the grouting type self-expanding anchor rod structure provided by the present invention, the anchoring section 6 is provided with external threads, or is a protrusion protruding from the outer surface of the anchoring section, or is an anti-slip pattern of other structures, so as to improve the adhesion force with other objects.
When the anchor rod structure provided by the invention is used for reinforcing a rock body, the concrete implementation steps are as follows:
drilling an anchoring hole at a preset position, wherein the aperture is slightly larger than the outer diameter of the anchor rod structure when the lateral expansion device 2 contracts;
injecting high-strength quick-setting resin into the hole bottom, quickly pushing the anchor rod structure to the hole bottom, inserting the anchoring section 6 of the hollow grouting rod body 1 into the resin, and reinforcing the adhesive force of the resin through external threads;
after the anchoring section resin is solidified, screwing the grout blocking tray 3 to enable the grout blocking tray to be tightly attached to the hole opening of the anchoring hole;
applying outward pulling force to the inhaul cable 10 to force the lateral contraction and expansion unit to compress and apply lateral extrusion force to the rock mass at the hole wall, and when the pulling stress applied to the inhaul cable 10 reaches the design value, fixing the inhaul cable by using the porous anchorage device 4;
grout is injected into the hollow grouting rod body 1 through the diversion holes 8, and after grouting is completed, the grout stopping cap 5 is screwed down.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. Slip casting type is from inflation stock structure, its characterized in that includes:
the hollow grouting rod body (1) comprises a grouting section (14), one end of the grouting section (14) is coaxially connected with the anchoring section (6), the other end of the grouting section is provided with a grout stopping cap (5), the axial center of the grouting section (14) is provided with a flow guide hole (8), and the axial center of the grouting section is radially provided with a plurality of grouting holes (7) communicated with the flow guide hole (8);
the lateral expansion device (2) comprises a slurry blocking tray (3), a sliding cylinder (9), a plurality of lateral telescopic expansion units and a plurality of inhaul cables (10), the grout blocking tray (3) is assembled at one end of the outer part of the grouting section (14) close to the grout stopping cap (5), the sliding barrel (9) is slidably sleeved at one end, close to the anchoring section (6), of the outer portion of the grouting section (14), a plurality of lateral telescopic expansion units are uniformly distributed around the outer portion of the grouting section (14), two ends of each lateral telescopic expansion unit are respectively connected with the grouting blocking tray (3) and the sliding barrel, a plurality of inhaul cables (10) are located between the grouting section (14) and the lateral telescopic expansion units, one end of the pull rope is connected with the sliding cylinder (9), the other end of the pull rope penetrates through a through hole (13) correspondingly arranged on the slurry plugging tray (3), and by means of external force applied to the pull rope (10), the lateral telescopic expansion unit axially contracts along the grouting section (14) and expands outwards;
the using process is as follows:
drilling an anchoring hole at a preset position, wherein the aperture is larger than the outer diameter of the anchor rod structure when the lateral expansion device (2) contracts;
injecting high-strength quick-setting resin into the bottom of the anchoring hole, quickly pushing the anchor rod structure to the bottom of the hole, inserting the anchoring section (6) of the hollow grouting rod body (1) into the resin, and reinforcing the adhesive force of the resin through the external threads of the anchoring section (6);
after the resin of the anchoring section (6) is solidified, screwing the grout blocking tray (3) to enable the grout blocking tray to be tightly attached to the hole opening of the anchoring hole;
applying outward pulling force to the inhaul cable (10) to force the lateral contraction and expansion unit to compress and apply lateral extrusion force to the rock mass on the hole wall, and when the pulling stress applied to the inhaul cable (10) reaches a design value, fixing the inhaul cable (10) by using the porous anchorage device (4);
grouting into the hollow grouting rod body (1) through the flow guide holes (8), and screwing the grout stopping cap (5) after grouting is finished;
the lateral telescopic expansion unit comprises a plurality of steel arch frames (12) and a rotating hinge (11) for connecting two adjacent steel arch frames; the adjacent steel arches (12) are rotationally connected by virtue of the rotating hinges (11), and when the inhaul cable (10) is tensioned, the adjacent steel arches (12) are mutually closed, so that the lateral telescopic expansion unit expands outwards to extrude the drilled hole and extends into the wall of the drilled hole;
the steel arch (12) is of an arch structure which is arched towards the grouting section (14); the arch structure is trapezoidal; the rotating hinge (11) is close to the outer side, along with the outward stretching of the inhaul cable (10), the rotating hinge (11) is extruded outwards, the included angle formed by the two edges connected with the rotating hinge (11) is gradually reduced, and the rotating hinge (11) can be conveniently inserted into the inner wall of the drilled hole.
2. The grouting type self-expanding anchor structure of claim 1, wherein: a plurality of groups of the grouting holes (7) are arranged along the axial direction of the grouting section (14), and the grouting holes (7) in each group are uniformly arranged along the same radial section of the grouting section (14).
3. A slip casting type self-expanding anchor rod structure according to claim 2, wherein: the multiple groups of grouting holes (7) are arranged at equal intervals along the axial direction of the grouting section (14).
4. The grouting type self-expanding anchor structure of claim 1, wherein: the arch structure is trapezoidal, and the rotating hinge (11) is connected to the free ends corresponding to the adjacent two trapezoids.
5. The grouting type self-expanding anchor structure of claim 4, wherein: the trapezoid is an isosceles trapezoid.
6. A slip casting type self-expanding anchor rod structure according to any one of claims 1 to 5, wherein: an annular groove is formed in the outer end face of the slurry blocking tray (3), a porous anchorage device (4) for the stay cable to penetrate through is assembled in the annular groove, and through holes in the porous anchorage device (4) are in one-to-one correspondence and coaxial with the through holes (13).
7. The grouting type self-expanding anchor structure of claim 6, wherein: an anchoring part for fixing the inhaul cable (10) is arranged at the through hole.
8. The grouting type self-expanding anchor structure of claim 1, wherein: the anchoring section (6) is provided with an external thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336301.6A CN109236338B (en) | 2018-11-09 | 2018-11-09 | Slip casting type self-expansion anchor rod structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336301.6A CN109236338B (en) | 2018-11-09 | 2018-11-09 | Slip casting type self-expansion anchor rod structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109236338A CN109236338A (en) | 2019-01-18 |
| CN109236338B true CN109236338B (en) | 2020-12-22 |
Family
ID=65077927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811336301.6A Active CN109236338B (en) | 2018-11-09 | 2018-11-09 | Slip casting type self-expansion anchor rod structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109236338B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185032A (en) * | 2019-05-29 | 2019-08-30 | 徐州工程学院 | A kind of self-expanding anchoring section anchor pole |
| CN110144904A (en) * | 2019-06-06 | 2019-08-20 | 招商局重庆交通科研设计院有限公司 | It is a kind of to face upward inclined discharge structure and its construction method with anchoring function certainly |
| CN112112678B (en) * | 2020-09-07 | 2024-05-17 | 中铁武汉勘察设计院有限公司 | A take flank stock for extruding soil body with check valve |
| CN112576292B (en) * | 2021-01-04 | 2022-08-26 | 贵州大学 | Prestressed hollow grouting anchor rod and construction method |
| CN113605948B (en) * | 2021-06-24 | 2023-12-29 | 广西北投交通养护科技集团有限公司 | Multi-section self-adaptive expansion anchor rod recycling method |
| CN113639908B (en) * | 2021-06-24 | 2023-06-30 | 广西北投交通养护科技集团有限公司 | Stress detection method for multi-section self-adaptive expansion anchor rod |
| CN113668521B (en) * | 2021-06-24 | 2022-10-14 | 广西北投交通养护科技集团有限公司 | Recoverable multistage self-adaptation inflation stock |
| CN113586114B (en) * | 2021-08-16 | 2024-04-12 | 石家庄铁道大学 | Radial expansion extrusion type anchor rod |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012126042A1 (en) * | 2011-03-18 | 2012-09-27 | Dywidag-Systems International Pty Limited | Inflatable friction bolt |
| CN103615272A (en) * | 2013-11-07 | 2014-03-05 | 山东交通学院 | Hollow anchor rod with rebar framework and construction method of hollow anchor rod |
| CN107558470A (en) * | 2017-10-11 | 2018-01-09 | 安徽理工大学 | A kind of new grouted anchor bar and construction method with the adjustable wing |
-
2018
- 2018-11-09 CN CN201811336301.6A patent/CN109236338B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109236338A (en) | 2019-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109236338B (en) | Slip casting type self-expansion anchor rod structure | |
| CN109184767B (en) | Tension expansion type hollow grouting anchor rod structure | |
| RU2651681C2 (en) | Rock anchor bolt | |
| CN109083668A (en) | A kind of grouting and reinforcing anchor pole suitable for high stress breaking surrounding rock supporting | |
| CN110185484A (en) | The combined anchor device and construction method that tunnel wall rock deformation quickly controls | |
| CN102704971B (en) | Grouting grouting cable anchor in hole | |
| CN110863667A (en) | Anti-seepage plugging structure and method for concrete shear wall screw hole | |
| CN102051880A (en) | Detachable anchor | |
| CN218376527U (en) | Hollow grouting constant-resistance anchor cable for soft rock roadway | |
| SE527424C2 (en) | Device and method for grouting and fixing reinforcing and / or anchoring elements in rock wall | |
| CN108442386B (en) | Detachable core expansion anchoring structure device and assembly construction method thereof | |
| CN203701092U (en) | Extrusion lock stress dispersion type high-tonnage anchor cable | |
| CN113738423B (en) | Coal mine tunnel ultrahigh-strength anti-bending shear anchor cable supporting device and supporting method | |
| CN108560612B (en) | Water stop device | |
| CN209114465U (en) | Foundation pit supporting construction | |
| CN109024622B (en) | Use method of slope reinforcement rod piece | |
| CN205276268U (en) | Dual cavity stock of pulling force decentralized self -drilling | |
| CN106480880B (en) | Recoverable soil nailing and the construction method for using recoverable soil nail | |
| CN206941609U (en) | A kind of foundation pit supporting construction | |
| CN105134249A (en) | Gradual support method for large broken rock zone tunnel of mine | |
| CN211647427U (en) | Anti-seepage plugging structure for screw hole of concrete shear wall | |
| CN209907740U (en) | Building steel reinforcement framework node connector | |
| CN212250089U (en) | Novel impulse type grouting anchor rod | |
| CN101086159A (en) | Annular extension limit flexible pressurized grouting bolt | |
| CN209907384U (en) | Prestressed anchor rod capable of actively applying pretightening force |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |